swift-format line break after the =

I am using VSCode + Swift extension.

Not sure how it works, but if I set respectsExistingLineBreaks to true, this code
```
velocity = Vector3(
	x: input.x,
	y: 0,
	z: input.y
) * speed
```
will be formatted as
```
velocity =
	Vector3(
		x: input.x,
		y: 0,
		z: input.y
	) * speed
```